Mold for brass journal-bearings.



' PATENTBD APR. 28, 1903.

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I- n fl my ,7, f v I F. J. PRIESE & J. E. GILBERT. MOLD FOR BRASSJOURNAL BEARINGS.

APPLIOATION FILED NOV. 3, 1902.

UNITED STATES FFIQE.

PATENT FRANK J. FRIESE AND JOHN E. GILBERT, OF ST. LOUIS, MISSOURI, AS-SIGNORS OF TWO-TI-IIRDS TO EDWARD A. MORE, OF ST. LOUIS, MIS- SOURI.

SPECIFICATION forming part of Letters Patent No. 726,523, dated April28, 1903.

Applioation filed November 3,1902. Serial No. 129,815. (No model.) a

To all whom it may concern:

Be it known that we, FRANK J. FRIESE and JOHN E. GILBERT, citizens ofthe United and it consists in features of novelty herein-- after fullydescribed, and pointed out in the claims.

Figure I is a perspective View of our mold closed. Fig. II is ahorizontal cross-section taken on line II II, Fig. I. Fig. III is avertical transverse section taken on line III III, Fig. II. Fig. IV isan elevation of the mold open and looking at the inside faces of themembers. Fig. V is a perspective view of the pin used in dislodging thecasting from the mold. Fig. V1 is a perspective View of the clamp bywhich the members of the mold are held in closed position.

1 designates the drag of the mold, which is provided with a flanged base2, by which it may be fixed upon a suitable support andheld.

3 designates the cope of the mold, which is connected to the drag by ahinge-pin 4, which passes through ears carried by the drag and cope andconnects the cope to the drag in such manner that it may be swung to thedrag to close the mold or swung away from it to open the mold. The dragand cope members of the mold each have tapering side faces 5 at theopening edge of the'mold.

6 is a U-shaped clamp provided with a handle 7 and having interiorbeveled faces 8. (See Fig. VI.) This clamp is adapted to be applied tothe mold, as shown by dotted lines, Fig. II, so that it will embrace thetapering faces 5 and when driven onto the mold will hold the drag andcope firmly together during the molding operation. After the casting hasbeen produced the clamp is readily disengaged by striking it a blow witha hammer to permit the opening of the mold.

9 designates lugs projecting from the forward edges of the drag and copeand provided with opposing inclined faces 10, between which a pryer orwedge may be introduced to force the lugs apart and swing the cope awayfrom the drag.

11 designates a pin loosely mounted in the drag 1 and provided at itsinner end with a head 12. This pin normally projects beyond the outerface of the drag and is adapted to be struck to drive it inwardlythrough the drag after the casting has been produced for the purpose ofdislodging the casting.

13 designates a marking-plate removably mounted in the cope 3, so as tooccupy a po sition in the mold-chamber and occasion the imprint ofcharacters thereon in the casting produced: The plate is held by screws14.

15 designates reinforcing-ribs on the outer side of the cope, whichserve to strengthen that section of the mold.

17 designates the ingate of the mold, one half of which is contained bythe drag 1, as indicated at-17, Fig. IV, and the other half of which iscontained by the cope 3, as indicated at 17, Fig. IV. The ingate leadsto the bottom of the mold chamber to convey the metal first introduceddirectly to the bottom of the chamber, and 18 is a series of spruesleading at intervals from the portion 17 of the ingate into themoldchamber through which the metal flows to the chamber from the ingateas the chamber is filled, thereby providing for the gradual filling ofthe chamber from the bottom upwardly, the metal flowing through thesucceeding sprues from the ingate after the chamber below them has beenfilled and avoiding the occurrence of chilled metal at the top of themass of metal in the chamber that would occur in the event of thechamber being filled entirely at the bottom.

19 designates a large flow-gate situated in the drag and cope at thetopof themoldchamber and adapted to provide full and ample vent from thechamber to permit expansion and contraction of the casting and avoidsuch shrinkage thereof as would render the casting liable to crack Whilecooling.

The mold herein described is constructed entirely of metal, and by thedescribed construction is rendered particularly adaptable for castingthe journal-bearings of railroad cars and engines,such asare commonlyknown as brasses, which it has heretofore been found difficult to castin metal molds, owing to their peculiar contour and irregular shape andthickness that renders them extremely liable to crack in cooling.

We claim as our invention-- 1. The combination of a sectional moldprovided with an ingate contained partially in one of its sections andpartially in the tially as set forth.

FRANK J. FRIESE. JOHN E. GILBERT. In presence of E. S. KNIGHT, M. P.SMITH.

